ORIGINAL: yakfish
Thanks, lots of great info there. I also like the idea of knowing what is in the fuel I am using that and the ability to keep cost lower are the 2 main reasons I am looking into this.
I was also going to ask about the glow plug but you have already answered that for me. When changing nitro/oil contents do you need to adjust the head spacing (compression) by either adding or removing a shim?
Thanks for the help!
Nope. Car engines are usually shimmed for right around 20%, sometimes requiring a shim for 30%. I don't run that much nitro, it's just a waste for a basher rig. If you really wanted to go cheap, you could modify the engine to run zero nitro to have the same performance as 20% nitro. This requires milling the sleeve and the head though.
I also use the same glow plug from 5% nitro up to 20%. McCoy mc59.